کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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5923823 | 1571177 | 2015 | 5 صفحه PDF | دانلود رایگان |
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- We examined HRV response to postural change in primary insomniacs and controls.
- HRV was recorded at rest for 5Â min and then standing for 15Â min.
- Attenuated or absent HRV response to postural change was identified in insomniacs.
- This study will help us develop a new method for measuring autonomic impairment.
Previous studies have compared rest heart rate variability (HRV) between insomniacs and good sleepers, but the results have not been consistent. The altered HRV behavior in response to postural change was considered useful as another sensitive measure for evaluating the autonomic nervous function, however, to our knowledge, no study was found using HRV response to postural change in primary insomnia. Our study aimed to examine HRV response to postural change maneuver (PCM) in both primary insomniacs and controls between 22 and 39Â years of age to gain insights into the characteristics of the autonomic nervous system (ANS) function in primary insomnia subjects. HRV was recorded for 5Â min at seated rest, and then, the subjects quickly stood up from a seated position in up to 3Â s and remained standing for 15Â min. HRV was recorded at the following times: seated rest and 0-5Â min, 5-10Â min and 10-15Â min in the standing position. In primary insomnia subjects, attenuated or absent HRV response to postural change was identified, the increase in LF/HF ratio and the decrease in HF and SD1 from seated to standing were much slower than in the normal controls. In conclusion, this study provided evidence of the possible bi-directional relationship between insomnia and autonomic nervous system (ANS) function, which will move us closer to developing a new sensitive method for measuring autonomic impairment and early sympathetic damage in primary insomnia subjects.
Journal: Physiology & Behavior - Volume 140, 1 March 2015, Pages 127-131